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[x86] add an SSE2 + fast-unaligned accesses run for memset nonzero tests
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Was there really no other way to splat a byte in SSE2?
    punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
    pshuflw {{.*#+}} xmm0 = xmm0[0,0,0,0,4,5,6,7]
    pshufd {{.*#+}} xmm0 = xmm0[0,0,1,1]



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265172 91177308-0d34-0410-b5e6-96231b3b80d8
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@rotateright
rotateright committed Apr 1, 2016
1 parent 22b6378 commit 31624e4
Showing 1 changed file with 122 additions and 4 deletions.
126 changes: 122 additions & 4 deletions test/CodeGen/X86/memset-nonzero.ll
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Original file line number Diff line number Diff line change
@@ -1,8 +1,9 @@
; NOTE: Assertions have been autogenerated by update_test_checks.py
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=sse | FileCheck %s --check-prefix=ANY --check-prefix=SSE --check-prefix=SSE1
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=sse2 | FileCheck %s --check-prefix=ANY --check-prefix=SSE --check-prefix=SSE2
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=avx | FileCheck %s --check-prefix=ANY --check-prefix=AVX --check-prefix=AVX1
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=avx2 | FileCheck %s --check-prefix=ANY --check-prefix=AVX --check-prefix=AVX2
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=sse | FileCheck %s --check-prefix=SSE
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=sse2 | FileCheck %s --check-prefix=SSE
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=sse2,-slow-unaligned-mem-16 | FileCheck %s --check-prefix=SSE2FAST
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=avx | FileCheck %s --check-prefix=AVX --check-prefix=AVX1
; RUN: llc -mtriple=x86_64-unknown-unknown < %s -mattr=avx2 | FileCheck %s --check-prefix=AVX --check-prefix=AVX2

; https://llvm.org/bugs/show_bug.cgi?id=27100

Expand All @@ -13,6 +14,11 @@ define void @memset_16_nonzero_bytes(i8* %x) {
; SSE-NEXT: movq %rax, (%rdi)
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_16_nonzero_bytes:
; SSE2FAST: movaps {{.*#+}} xmm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; SSE2FAST-NEXT: movups %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX-LABEL: memset_16_nonzero_bytes:
; AVX: vmovaps {{.*#+}} xmm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; AVX-NEXT: vmovups %xmm0, (%rdi)
Expand All @@ -31,6 +37,12 @@ define void @memset_32_nonzero_bytes(i8* %x) {
; SSE-NEXT: movq %rax, (%rdi)
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_32_nonzero_bytes:
; SSE2FAST: movaps {{.*#+}} xmm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; SSE2FAST-NEXT: movups %xmm0, 16(%rdi)
; SSE2FAST-NEXT: movups %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX-LABEL: memset_32_nonzero_bytes:
; AVX: vmovaps {{.*#+}} ymm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; AVX-NEXT: vmovups %ymm0, (%rdi)
Expand All @@ -54,6 +66,14 @@ define void @memset_64_nonzero_bytes(i8* %x) {
; SSE-NEXT: movq %rax, (%rdi)
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_64_nonzero_bytes:
; SSE2FAST: movaps {{.*#+}} xmm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; SSE2FAST-NEXT: movups %xmm0, 48(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 32(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 16(%rdi)
; SSE2FAST-NEXT: movups %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX-LABEL: memset_64_nonzero_bytes:
; AVX: vmovaps {{.*#+}} ymm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; AVX-NEXT: vmovups %ymm0, 32(%rdi)
Expand Down Expand Up @@ -86,6 +106,18 @@ define void @memset_128_nonzero_bytes(i8* %x) {
; SSE-NEXT: movq %rax, (%rdi)
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_128_nonzero_bytes:
; SSE2FAST: movaps {{.*#+}} xmm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; SSE2FAST-NEXT: movups %xmm0, 112(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 96(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 80(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 64(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 48(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 32(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 16(%rdi)
; SSE2FAST-NEXT: movups %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX-LABEL: memset_128_nonzero_bytes:
; AVX: vmovaps {{.*#+}} ymm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; AVX-NEXT: vmovups %ymm0, 96(%rdi)
Expand All @@ -110,6 +142,26 @@ define void @memset_256_nonzero_bytes(i8* %x) {
; SSE-NEXT: popq %rax
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_256_nonzero_bytes:
; SSE2FAST: movaps {{.*#+}} xmm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; SSE2FAST-NEXT: movups %xmm0, 240(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 224(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 208(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 192(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 176(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 160(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 144(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 128(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 112(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 96(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 80(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 64(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 48(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 32(%rdi)
; SSE2FAST-NEXT: movups %xmm0, 16(%rdi)
; SSE2FAST-NEXT: movups %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX-LABEL: memset_256_nonzero_bytes:
; AVX: vmovaps {{.*#+}} ymm0 = [42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]
; AVX-NEXT: vmovups %ymm0, 224(%rdi)
Expand Down Expand Up @@ -140,6 +192,14 @@ define void @memset_16_nonconst_bytes(i8* %x, i8 %c) {
; SSE-NEXT: movq %rcx, (%rdi)
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_16_nonconst_bytes:
; SSE2FAST: movd %esi, %xmm0
; SSE2FAST-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
; SSE2FAST-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,0,0,0,4,5,6,7]
; SSE2FAST-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,0,1,1]
; SSE2FAST-NEXT: movdqu %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX1-LABEL: memset_16_nonconst_bytes:
; AVX1: vmovd %esi, %xmm0
; AVX1-NEXT: vpxor %xmm1, %xmm1, %xmm1
Expand Down Expand Up @@ -168,6 +228,15 @@ define void @memset_32_nonconst_bytes(i8* %x, i8 %c) {
; SSE-NEXT: movq %rcx, (%rdi)
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_32_nonconst_bytes:
; SSE2FAST: movd %esi, %xmm0
; SSE2FAST-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
; SSE2FAST-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,0,0,0,4,5,6,7]
; SSE2FAST-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,0,1,1]
; SSE2FAST-NEXT: movdqu %xmm0, 16(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX1-LABEL: memset_32_nonconst_bytes:
; AVX1: vmovd %esi, %xmm0
; AVX1-NEXT: vpxor %xmm1, %xmm1, %xmm1
Expand Down Expand Up @@ -203,6 +272,17 @@ define void @memset_64_nonconst_bytes(i8* %x, i8 %c) {
; SSE-NEXT: movq %rcx, (%rdi)
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_64_nonconst_bytes:
; SSE2FAST: movd %esi, %xmm0
; SSE2FAST-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
; SSE2FAST-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,0,0,0,4,5,6,7]
; SSE2FAST-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,0,1,1]
; SSE2FAST-NEXT: movdqu %xmm0, 48(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 32(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 16(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX1-LABEL: memset_64_nonconst_bytes:
; AVX1: vmovd %esi, %xmm0
; AVX1-NEXT: vpxor %xmm1, %xmm1, %xmm1
Expand Down Expand Up @@ -248,6 +328,21 @@ define void @memset_128_nonconst_bytes(i8* %x, i8 %c) {
; SSE-NEXT: movq %rcx, (%rdi)
; SSE-NEXT: retq
;
; SSE2FAST-LABEL: memset_128_nonconst_bytes:
; SSE2FAST: movd %esi, %xmm0
; SSE2FAST-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
; SSE2FAST-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,0,0,0,4,5,6,7]
; SSE2FAST-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,0,1,1]
; SSE2FAST-NEXT: movdqu %xmm0, 112(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 96(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 80(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 64(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 48(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 32(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 16(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX1-LABEL: memset_128_nonconst_bytes:
; AVX1: vmovd %esi, %xmm0
; AVX1-NEXT: vpxor %xmm1, %xmm1, %xmm1
Expand Down Expand Up @@ -279,6 +374,29 @@ define void @memset_256_nonconst_bytes(i8* %x, i8 %c) {
; SSE: movl $256, %edx # imm = 0x100
; SSE-NEXT: jmp memset # TAILCALL
;
; SSE2FAST-LABEL: memset_256_nonconst_bytes:
; SSE2FAST: movd %esi, %xmm0
; SSE2FAST-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
; SSE2FAST-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,0,0,0,4,5,6,7]
; SSE2FAST-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,0,1,1]
; SSE2FAST-NEXT: movdqu %xmm0, 240(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 224(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 208(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 192(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 176(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 160(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 144(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 128(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 112(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 96(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 80(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 64(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 48(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 32(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, 16(%rdi)
; SSE2FAST-NEXT: movdqu %xmm0, (%rdi)
; SSE2FAST-NEXT: retq
;
; AVX1-LABEL: memset_256_nonconst_bytes:
; AVX1: vmovd %esi, %xmm0
; AVX1-NEXT: vpxor %xmm1, %xmm1, %xmm1
Expand Down

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